./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:42:55,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:42:55,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2025-01-09 21:42:55,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:42:55,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:42:55,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:42:55,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:42:55,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:42:55,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 21:42:55,695 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 21:42:55,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:42:55,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:42:55,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:42:55,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:42:55,697 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:42:55,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:42:55,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:42:55,697 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:42:55,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:42:55,698 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:42:55,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:42:55,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:42:55,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:42:55,699 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2025-01-09 21:42:55,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:42:55,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:42:55,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:42:55,999 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:42:56,000 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:42:56,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2025-01-09 21:42:57,325 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c5ef92be5/9932a8795ba0430fae3952500f03b8cd/FLAG9bc8a3c9f [2025-01-09 21:42:57,668 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:42:57,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2025-01-09 21:42:57,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c5ef92be5/9932a8795ba0430fae3952500f03b8cd/FLAG9bc8a3c9f [2025-01-09 21:42:57,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c5ef92be5/9932a8795ba0430fae3952500f03b8cd [2025-01-09 21:42:57,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:42:57,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:42:57,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:42:57,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:42:57,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:42:57,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:42:57" (1/1) ... [2025-01-09 21:42:57,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7657039c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:57, skipping insertion in model container [2025-01-09 21:42:57,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:42:57" (1/1) ... [2025-01-09 21:42:57,939 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:42:58,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:42:58,265 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:42:58,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:42:58,334 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:42:58,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58 WrapperNode [2025-01-09 21:42:58,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:42:58,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:42:58,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:42:58,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:42:58,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,370 INFO L138 Inliner]: procedures = 140, calls = 95, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 204 [2025-01-09 21:42:58,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:42:58,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:42:58,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:42:58,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:42:58,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,418 INFO L175 MemorySlicer]: Split 48 memory accesses to 3 slices as follows [2, 40, 6]. 83 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 13 writes are split as follows [0, 11, 2]. [2025-01-09 21:42:58,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,432 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:42:58,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:42:58,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:42:58,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:42:58,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (1/1) ... [2025-01-09 21:42:58,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:42:58,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:42:58,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:42:58,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:42:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2025-01-09 21:42:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2025-01-09 21:42:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2025-01-09 21:42:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2025-01-09 21:42:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 21:42:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:42:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2025-01-09 21:42:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2025-01-09 21:42:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 21:42:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 21:42:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 21:42:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 21:42:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2025-01-09 21:42:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2025-01-09 21:42:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 21:42:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 21:42:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 21:42:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 21:42:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 21:42:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 21:42:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 21:42:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2025-01-09 21:42:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2025-01-09 21:42:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2025-01-09 21:42:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2025-01-09 21:42:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 21:42:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 21:42:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 21:42:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:42:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:42:58,680 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:42:58,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:42:59,084 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2025-01-09 21:42:59,084 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:42:59,100 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:42:59,100 INFO L312 CfgBuilder]: Removed 15 assume(true) statements. [2025-01-09 21:42:59,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:42:59 BoogieIcfgContainer [2025-01-09 21:42:59,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:42:59,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:42:59,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:42:59,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:42:59,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:42:57" (1/3) ... [2025-01-09 21:42:59,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575e4479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:42:59, skipping insertion in model container [2025-01-09 21:42:59,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:42:58" (2/3) ... [2025-01-09 21:42:59,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575e4479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:42:59, skipping insertion in model container [2025-01-09 21:42:59,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:42:59" (3/3) ... [2025-01-09 21:42:59,111 INFO L128 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2025-01-09 21:42:59,126 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:42:59,127 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll_of_dll-2.i that has 7 procedures, 131 locations, 1 initial locations, 24 loop locations, and 2 error locations. [2025-01-09 21:42:59,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:42:59,182 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@175cf8b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:42:59,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 21:42:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 119 states have internal predecessors, (159), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 21:42:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 21:42:59,196 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:42:59,196 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:42:59,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:42:59,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:42:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash 474013252, now seen corresponding path program 1 times [2025-01-09 21:42:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:42:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639164552] [2025-01-09 21:42:59,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:42:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:42:59,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 21:42:59,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 21:42:59,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:42:59,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:42:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 21:42:59,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:42:59,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639164552] [2025-01-09 21:42:59,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639164552] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:42:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612995038] [2025-01-09 21:42:59,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:42:59,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:42:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:42:59,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:42:59,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 21:42:59,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 21:42:59,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 21:42:59,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:42:59,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:42:59,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 21:42:59,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:42:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 21:42:59,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 21:42:59,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612995038] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:42:59,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 21:42:59,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 21:42:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920025512] [2025-01-09 21:42:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:42:59,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:42:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:42:59,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:42:59,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:42:59,726 INFO L87 Difference]: Start difference. First operand has 131 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 119 states have internal predecessors, (159), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 21:42:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:42:59,754 INFO L93 Difference]: Finished difference Result 128 states and 158 transitions. [2025-01-09 21:42:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:42:59,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2025-01-09 21:42:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:42:59,764 INFO L225 Difference]: With dead ends: 128 [2025-01-09 21:42:59,765 INFO L226 Difference]: Without dead ends: 126 [2025-01-09 21:42:59,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:42:59,770 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 21:42:59,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 21:42:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-01-09 21:42:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2025-01-09 21:42:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 114 states have internal predecessors, (122), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-09 21:42:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2025-01-09 21:42:59,812 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 39 [2025-01-09 21:42:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:42:59,812 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2025-01-09 21:42:59,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 21:42:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2025-01-09 21:42:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-09 21:42:59,817 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:42:59,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:42:59,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 21:43:00,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 21:43:00,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:43:00,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:43:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1755878656, now seen corresponding path program 1 times [2025-01-09 21:43:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:43:00,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786505497] [2025-01-09 21:43:00,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:43:00,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 21:43:00,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 21:43:00,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:00,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:43:00,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:43:00,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786505497] [2025-01-09 21:43:00,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786505497] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:43:00,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403403322] [2025-01-09 21:43:00,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:00,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:00,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:43:00,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:43:00,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 21:43:01,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 21:43:01,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 21:43:01,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:01,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:01,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 21:43:01,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:43:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 21:43:01,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 21:43:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403403322] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:43:01,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 21:43:01,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2025-01-09 21:43:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641673402] [2025-01-09 21:43:01,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:43:01,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 21:43:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:43:01,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 21:43:01,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-01-09 21:43:01,277 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 21:43:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:43:01,397 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2025-01-09 21:43:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:43:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2025-01-09 21:43:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:43:01,399 INFO L225 Difference]: With dead ends: 139 [2025-01-09 21:43:01,399 INFO L226 Difference]: Without dead ends: 139 [2025-01-09 21:43:01,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-01-09 21:43:01,400 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 14 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 21:43:01,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 582 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 21:43:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-01-09 21:43:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2025-01-09 21:43:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 103 states have (on average 1.2718446601941749) internal successors, (131), 122 states have internal predecessors, (131), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 21:43:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 171 transitions. [2025-01-09 21:43:01,419 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 171 transitions. Word has length 40 [2025-01-09 21:43:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:43:01,419 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 171 transitions. [2025-01-09 21:43:01,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 21:43:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 171 transitions. [2025-01-09 21:43:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-01-09 21:43:01,422 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:43:01,422 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:43:01,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 21:43:01,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:01,627 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:43:01,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:43:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1654215328, now seen corresponding path program 1 times [2025-01-09 21:43:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:43:01,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83569714] [2025-01-09 21:43:01,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:43:01,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-01-09 21:43:01,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-01-09 21:43:01,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:01,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 12 proven. 54 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-01-09 21:43:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:43:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83569714] [2025-01-09 21:43:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83569714] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:43:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364889270] [2025-01-09 21:43:02,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:02,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:02,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:43:02,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:43:02,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 21:43:02,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-01-09 21:43:02,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-01-09 21:43:02,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:02,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:02,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-09 21:43:02,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:43:03,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 21:43:03,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-01-09 21:43:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-09 21:43:03,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 21:43:03,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2025-01-09 21:43:03,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2025-01-09 21:43:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-09 21:43:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364889270] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 21:43:03,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 21:43:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 15] total 22 [2025-01-09 21:43:03,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655419999] [2025-01-09 21:43:03,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 21:43:03,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 21:43:03,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:43:03,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 21:43:03,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2025-01-09 21:43:03,785 INFO L87 Difference]: Start difference. First operand 139 states and 171 transitions. Second operand has 22 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 21:43:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:43:05,183 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2025-01-09 21:43:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-09 21:43:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 112 [2025-01-09 21:43:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:43:05,185 INFO L225 Difference]: With dead ends: 214 [2025-01-09 21:43:05,186 INFO L226 Difference]: Without dead ends: 209 [2025-01-09 21:43:05,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 21:43:05,187 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 168 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 21:43:05,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1919 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 21:43:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-01-09 21:43:05,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 172. [2025-01-09 21:43:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 151 states have internal predecessors, (166), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (16), 12 states have call predecessors, (16), 14 states have call successors, (16) [2025-01-09 21:43:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2025-01-09 21:43:05,212 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 112 [2025-01-09 21:43:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:43:05,212 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2025-01-09 21:43:05,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 6 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 21:43:05,212 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2025-01-09 21:43:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-01-09 21:43:05,215 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:43:05,215 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:43:05,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 21:43:05,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:05,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:43:05,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:43:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash 181393066, now seen corresponding path program 1 times [2025-01-09 21:43:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:43:05,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40186439] [2025-01-09 21:43:05,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:43:05,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-09 21:43:05,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 21:43:05,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:05,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 21:43:06,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:43:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40186439] [2025-01-09 21:43:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40186439] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:43:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048639815] [2025-01-09 21:43:06,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:06,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:06,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:43:06,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:43:06,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 21:43:06,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-09 21:43:07,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 21:43:07,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:07,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:07,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 21:43:07,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:43:07,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 21:43:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 21:43:07,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 21:43:07,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2025-01-09 21:43:07,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2025-01-09 21:43:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 29 proven. 25 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 21:43:07,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048639815] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 21:43:07,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 21:43:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 23 [2025-01-09 21:43:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578394967] [2025-01-09 21:43:07,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 21:43:07,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 21:43:07,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:43:07,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 21:43:07,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2025-01-09 21:43:07,935 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand has 23 states, 21 states have (on average 3.0) internal successors, (63), 18 states have internal predecessors, (63), 9 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2025-01-09 21:43:08,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:43:08,913 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2025-01-09 21:43:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 21:43:08,914 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.0) internal successors, (63), 18 states have internal predecessors, (63), 9 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 115 [2025-01-09 21:43:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:43:08,916 INFO L225 Difference]: With dead ends: 184 [2025-01-09 21:43:08,916 INFO L226 Difference]: Without dead ends: 184 [2025-01-09 21:43:08,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 21:43:08,917 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 138 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 21:43:08,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1314 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 21:43:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-01-09 21:43:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2025-01-09 21:43:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 139 states have (on average 1.2446043165467626) internal successors, (173), 158 states have internal predecessors, (173), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2025-01-09 21:43:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 220 transitions. [2025-01-09 21:43:08,936 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 220 transitions. Word has length 115 [2025-01-09 21:43:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:43:08,936 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 220 transitions. [2025-01-09 21:43:08,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.0) internal successors, (63), 18 states have internal predecessors, (63), 9 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2025-01-09 21:43:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 220 transitions. [2025-01-09 21:43:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-01-09 21:43:08,940 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:43:08,941 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:43:08,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 21:43:09,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:09,142 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:43:09,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:43:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2120854934, now seen corresponding path program 1 times [2025-01-09 21:43:09,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:43:09,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725885223] [2025-01-09 21:43:09,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:43:09,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-09 21:43:09,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 21:43:09,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:09,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-09 21:43:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:43:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725885223] [2025-01-09 21:43:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725885223] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:43:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610346048] [2025-01-09 21:43:09,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:09,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:09,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:43:09,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:43:09,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 21:43:10,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-09 21:43:10,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 21:43:10,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:10,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:10,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-09 21:43:10,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:43:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 94 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-09 21:43:10,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 21:43:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-09 21:43:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610346048] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 21:43:10,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 21:43:10,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 17 [2025-01-09 21:43:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745207270] [2025-01-09 21:43:10,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 21:43:10,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 21:43:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:43:10,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 21:43:10,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-01-09 21:43:10,972 INFO L87 Difference]: Start difference. First operand 181 states and 220 transitions. Second operand has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 13 states have internal predecessors, (83), 7 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2025-01-09 21:43:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:43:11,497 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2025-01-09 21:43:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 21:43:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 13 states have internal predecessors, (83), 7 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) Word has length 115 [2025-01-09 21:43:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:43:11,500 INFO L225 Difference]: With dead ends: 183 [2025-01-09 21:43:11,501 INFO L226 Difference]: Without dead ends: 181 [2025-01-09 21:43:11,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-01-09 21:43:11,502 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 130 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 21:43:11,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 875 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 21:43:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-01-09 21:43:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2025-01-09 21:43:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 139 states have (on average 1.2446043165467626) internal successors, (173), 158 states have internal predecessors, (173), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2025-01-09 21:43:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 219 transitions. [2025-01-09 21:43:11,519 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 219 transitions. Word has length 115 [2025-01-09 21:43:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:43:11,519 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 219 transitions. [2025-01-09 21:43:11,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 13 states have internal predecessors, (83), 7 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2025-01-09 21:43:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 219 transitions. [2025-01-09 21:43:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-01-09 21:43:11,520 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:43:11,520 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:43:11,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 21:43:11,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:11,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:43:11,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:43:11,722 INFO L85 PathProgramCache]: Analyzing trace with hash 140718316, now seen corresponding path program 1 times [2025-01-09 21:43:11,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:43:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484418838] [2025-01-09 21:43:11,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:43:11,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-09 21:43:11,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 21:43:11,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:11,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 47 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 21:43:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:43:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484418838] [2025-01-09 21:43:19,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484418838] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 21:43:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073412413] [2025-01-09 21:43:19,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:43:19,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:43:19,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:43:19,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:43:19,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 21:43:19,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-01-09 21:43:20,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 21:43:20,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:43:20,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:43:20,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 209 conjuncts are in the unsatisfiable core [2025-01-09 21:43:20,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:43:20,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 21:43:20,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 21:43:21,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 21:43:21,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 21:43:21,378 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2025-01-09 21:43:21,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 28 [2025-01-09 21:43:21,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 21:44:05,843 WARN L249 Executor]: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2025-01-09 21:44:05,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2025-01-09 21:44:05,844 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-01-09 21:44:05,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 21:44:06,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 21:44:06,045 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2025-01-09 21:44:06,050 INFO L158 Benchmark]: Toolchain (without parser) took 68148.34ms. Allocated memory was 142.6MB in the beginning and 713.0MB in the end (delta: 570.4MB). Free memory was 112.4MB in the beginning and 545.9MB in the end (delta: -433.5MB). Peak memory consumption was 139.1MB. Max. memory is 16.1GB. [2025-01-09 21:44:06,050 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:44:06,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.14ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 92.9MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 21:44:06,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.92ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 90.4MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 21:44:06,050 INFO L158 Benchmark]: Boogie Preprocessor took 74.81ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 85.0MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 21:44:06,051 INFO L158 Benchmark]: RCFGBuilder took 653.40ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 56.4MB in the end (delta: 28.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-09 21:44:06,051 INFO L158 Benchmark]: TraceAbstraction took 66946.33ms. Allocated memory was 142.6MB in the beginning and 713.0MB in the end (delta: 570.4MB). Free memory was 55.9MB in the beginning and 545.9MB in the end (delta: -489.9MB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. [2025-01-09 21:44:06,052 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.14ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 92.9MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.92ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 90.4MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.81ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 85.0MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 653.40ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 56.4MB in the end (delta: 28.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 66946.33ms. Allocated memory was 142.6MB in the beginning and 713.0MB in the end (delta: 570.4MB). Free memory was 55.9MB in the beginning and 545.9MB in the end (delta: -489.9MB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:44:08,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:44:08,099 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2025-01-09 21:44:08,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:44:08,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:44:08,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:44:08,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:44:08,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:44:08,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 21:44:08,133 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 21:44:08,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:44:08,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:44:08,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:44:08,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:44:08,133 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:44:08,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:44:08,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:44:08,133 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:44:08,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:44:08,136 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:44:08,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:44:08,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:44:08,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:44:08,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:44:08,137 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 21:44:08,137 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 21:44:08,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:44:08,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:44:08,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:44:08,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:44:08,138 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2025-01-09 21:44:08,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:44:08,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:44:08,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:44:08,436 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:44:08,436 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:44:08,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2025-01-09 21:44:09,705 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a791ae481/4b5989c06ae74b2c85ebb8e69290bc6b/FLAG45a48e41f [2025-01-09 21:44:10,012 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:44:10,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2025-01-09 21:44:10,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a791ae481/4b5989c06ae74b2c85ebb8e69290bc6b/FLAG45a48e41f [2025-01-09 21:44:10,286 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a791ae481/4b5989c06ae74b2c85ebb8e69290bc6b [2025-01-09 21:44:10,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:44:10,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:44:10,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:44:10,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:44:10,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:44:10,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2e01a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10, skipping insertion in model container [2025-01-09 21:44:10,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,337 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:44:10,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:44:10,621 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:44:10,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:44:10,727 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:44:10,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10 WrapperNode [2025-01-09 21:44:10,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:44:10,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:44:10,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:44:10,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:44:10,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,782 INFO L138 Inliner]: procedures = 141, calls = 95, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 205 [2025-01-09 21:44:10,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:44:10,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:44:10,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:44:10,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:44:10,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,837 INFO L175 MemorySlicer]: Split 48 memory accesses to 3 slices as follows [2, 40, 6]. 83 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 13 writes are split as follows [0, 11, 2]. [2025-01-09 21:44:10,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,850 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:44:10,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:44:10,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:44:10,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:44:10,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (1/1) ... [2025-01-09 21:44:10,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:44:10,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:44:10,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:44:10,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:44:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2025-01-09 21:44:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2025-01-09 21:44:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2025-01-09 21:44:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2025-01-09 21:44:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2025-01-09 21:44:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2025-01-09 21:44:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 21:44:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2025-01-09 21:44:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2025-01-09 21:44:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-09 21:44:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-09 21:44:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-01-09 21:44:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2025-01-09 21:44:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2025-01-09 21:44:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:44:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:44:11,067 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:44:11,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:44:11,661 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2025-01-09 21:44:11,661 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:44:11,675 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:44:11,675 INFO L312 CfgBuilder]: Removed 15 assume(true) statements. [2025-01-09 21:44:11,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:44:11 BoogieIcfgContainer [2025-01-09 21:44:11,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:44:11,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:44:11,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:44:11,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:44:11,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:44:10" (1/3) ... [2025-01-09 21:44:11,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78254342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:44:11, skipping insertion in model container [2025-01-09 21:44:11,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:10" (2/3) ... [2025-01-09 21:44:11,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78254342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:44:11, skipping insertion in model container [2025-01-09 21:44:11,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:44:11" (3/3) ... [2025-01-09 21:44:11,685 INFO L128 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2025-01-09 21:44:11,695 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:44:11,696 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll_of_dll-2.i that has 7 procedures, 131 locations, 1 initial locations, 24 loop locations, and 2 error locations. [2025-01-09 21:44:11,726 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:44:11,740 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2aa5946c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:44:11,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 21:44:11,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 119 states have internal predecessors, (159), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 21:44:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 21:44:11,751 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:44:11,751 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:44:11,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:44:11,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:44:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash 474013252, now seen corresponding path program 1 times [2025-01-09 21:44:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 21:44:11,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476776622] [2025-01-09 21:44:11,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:44:11,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:44:11,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:44:11,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 21:44:11,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 21:44:11,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 21:44:11,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:44:11,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:44:11,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 21:44:11,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:44:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 21:44:12,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 21:44:12,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 21:44:12,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476776622] [2025-01-09 21:44:12,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476776622] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:44:12,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:44:12,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 21:44:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850081837] [2025-01-09 21:44:12,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:44:12,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:44:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 21:44:12,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:44:12,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:44:12,049 INFO L87 Difference]: Start difference. First operand has 131 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 119 states have internal predecessors, (159), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 21:44:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:44:12,073 INFO L93 Difference]: Finished difference Result 128 states and 158 transitions. [2025-01-09 21:44:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:44:12,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2025-01-09 21:44:12,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:44:12,083 INFO L225 Difference]: With dead ends: 128 [2025-01-09 21:44:12,083 INFO L226 Difference]: Without dead ends: 126 [2025-01-09 21:44:12,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:44:12,088 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 21:44:12,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 21:44:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-01-09 21:44:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2025-01-09 21:44:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 114 states have internal predecessors, (122), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-09 21:44:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2025-01-09 21:44:12,134 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 39 [2025-01-09 21:44:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:44:12,134 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2025-01-09 21:44:12,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 21:44:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2025-01-09 21:44:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-09 21:44:12,136 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:44:12,136 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:44:12,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 21:44:12,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:12,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:44:12,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:44:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1755878656, now seen corresponding path program 1 times [2025-01-09 21:44:12,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 21:44:12,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746707677] [2025-01-09 21:44:12,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:44:12,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:12,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:44:12,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:44:12,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 21:44:12,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 21:44:12,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 21:44:12,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:44:12,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:44:12,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 21:44:12,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:44:12,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 21:44:12,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-01-09 21:44:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 21:44:12,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 21:44:12,901 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 21:44:12,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746707677] [2025-01-09 21:44:12,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746707677] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:44:12,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:44:12,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-09 21:44:12,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650539490] [2025-01-09 21:44:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:44:12,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 21:44:12,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 21:44:12,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 21:44:12,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2025-01-09 21:44:12,903 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 21:44:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:44:13,876 INFO L93 Difference]: Finished difference Result 201 states and 255 transitions. [2025-01-09 21:44:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 21:44:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2025-01-09 21:44:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:44:13,878 INFO L225 Difference]: With dead ends: 201 [2025-01-09 21:44:13,878 INFO L226 Difference]: Without dead ends: 201 [2025-01-09 21:44:13,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-01-09 21:44:13,879 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 77 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 21:44:13,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1770 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 21:44:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-01-09 21:44:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 160. [2025-01-09 21:44:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 125 states have (on average 1.272) internal successors, (159), 143 states have internal predecessors, (159), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2025-01-09 21:44:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2025-01-09 21:44:13,903 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 40 [2025-01-09 21:44:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:44:13,903 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2025-01-09 21:44:13,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 21:44:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2025-01-09 21:44:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-09 21:44:13,907 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:44:13,907 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:44:13,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 21:44:14,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:14,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:44:14,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:44:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1563631414, now seen corresponding path program 1 times [2025-01-09 21:44:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 21:44:14,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566398652] [2025-01-09 21:44:14,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:44:14,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:14,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:44:14,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:44:14,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 21:44:14,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-01-09 21:44:14,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 21:44:14,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:44:14,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:44:14,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 21:44:14,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:44:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 21:44:14,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 21:44:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 21:44:14,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 21:44:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566398652] [2025-01-09 21:44:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566398652] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 21:44:14,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 21:44:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2025-01-09 21:44:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936931180] [2025-01-09 21:44:14,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 21:44:14,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:44:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 21:44:14,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:44:14,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:44:14,621 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 21:44:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:44:14,734 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2025-01-09 21:44:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:44:14,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2025-01-09 21:44:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:44:14,738 INFO L225 Difference]: With dead ends: 139 [2025-01-09 21:44:14,738 INFO L226 Difference]: Without dead ends: 139 [2025-01-09 21:44:14,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-09 21:44:14,739 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 14 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 21:44:14,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 582 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 21:44:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-01-09 21:44:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2025-01-09 21:44:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 103 states have (on average 1.2718446601941749) internal successors, (131), 122 states have internal predecessors, (131), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 21:44:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 171 transitions. [2025-01-09 21:44:14,758 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 171 transitions. Word has length 43 [2025-01-09 21:44:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:44:14,759 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 171 transitions. [2025-01-09 21:44:14,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 21:44:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 171 transitions. [2025-01-09 21:44:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-01-09 21:44:14,761 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:44:14,761 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:44:14,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 21:44:14,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:14,966 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:44:14,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:44:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1654215328, now seen corresponding path program 1 times [2025-01-09 21:44:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 21:44:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365773381] [2025-01-09 21:44:14,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:44:14,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:14,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:44:14,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:44:14,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 21:44:15,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-01-09 21:44:15,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-01-09 21:44:15,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:44:15,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:44:15,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 21:44:15,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:44:15,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 21:44:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 21:44:15,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 21:44:16,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2025-01-09 21:44:16,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2025-01-09 21:44:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 29 proven. 25 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 21:44:16,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 21:44:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365773381] [2025-01-09 21:44:16,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365773381] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 21:44:16,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 21:44:16,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 20 [2025-01-09 21:44:16,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322676916] [2025-01-09 21:44:16,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 21:44:16,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 21:44:16,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 21:44:16,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 21:44:16,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2025-01-09 21:44:16,644 INFO L87 Difference]: Start difference. First operand 139 states and 171 transitions. Second operand has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 16 states have internal predecessors, (56), 8 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2025-01-09 21:44:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 21:44:18,816 INFO L93 Difference]: Finished difference Result 159 states and 196 transitions. [2025-01-09 21:44:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 21:44:18,816 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 16 states have internal predecessors, (56), 8 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 112 [2025-01-09 21:44:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 21:44:18,818 INFO L225 Difference]: With dead ends: 159 [2025-01-09 21:44:18,818 INFO L226 Difference]: Without dead ends: 154 [2025-01-09 21:44:18,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 21:44:18,819 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 145 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-09 21:44:18,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1438 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-09 21:44:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-01-09 21:44:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2025-01-09 21:44:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 113 states have (on average 1.247787610619469) internal successors, (141), 132 states have internal predecessors, (141), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2025-01-09 21:44:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2025-01-09 21:44:18,831 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 112 [2025-01-09 21:44:18,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 21:44:18,831 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2025-01-09 21:44:18,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 16 states have internal predecessors, (56), 8 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2025-01-09 21:44:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2025-01-09 21:44:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-01-09 21:44:18,834 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 21:44:18,834 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:44:18,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 21:44:19,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:19,037 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-01-09 21:44:19,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:44:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2098116002, now seen corresponding path program 1 times [2025-01-09 21:44:19,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 21:44:19,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554832551] [2025-01-09 21:44:19,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:44:19,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 21:44:19,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:44:19,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 21:44:19,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 21:44:19,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-01-09 21:44:19,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-01-09 21:44:19,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:44:19,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:44:19,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 21:44:19,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 21:44:19,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1